Ok so after using this for a few months now on my mag, I can say give a proper review, it keeps up with my automag with no shoot down, but it is a bit long and is made from chocolate, the bonnet threads on it have now totally stripped (no it wasnt cross threaded!) It just wore out after I would say about 50 times on and off. So now I am back to my arrow precision reg as this has a stainless steel bonnet that I have used for the past 5 years and still look brand new.
If anyone is after one of these immortal regs I would suggest not to and wait for a ninja shp reg to be ordered.